Stropping-machine.



I. W. IRVING.

STROPPING MACHINE.

APPLICATION FILED NOV. 22, 1911. RENEWED AUG. 12, 1913.

1,090,854, Patented Mar. 24, 1914.

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STROPPING MACHINE.

APPLICATION FILED NOV. 22, 1911. RENEWED AUG. 12, 1913. 1,090,854.

Patented Mar. 24, 1914.

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IRA W. IRVING, OF NEW YORK, N. L, ASSIGNOR TO THE TRAUT & HINE MFG. (30., INC., NEW YORK, N. Y., A CORPORATION OF CONNECTICUT.

STROPPING-MACHINE.

To all whom it may concern:

Be it known that I, IRA W. IRVING, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and use ful Improvements in Stropping-llachines, of which the following is a specification.

The invention relates to stroppers and has for an object to provide a stropping machine for stropping razor blades and the like.

My invention embodies more particularly a portable device in which a strop is reciprocatingly mounted in a casing, the reciprocating action of the strop being adapt ed to reciprocatingly operate the blade holder adapted to receive the blade that is to be stropped.

The invention further embodies a stropping machine in which use is made of a strop having a smooth and a rough side, the strop being interchangeable so that either the smooth or rough side can be employed in stropping the blade.

To accomplish the desired result, use is made of a casing provided with a hook for connection with a stationary member such as a nail or the like, secured to a wall, a roller revolubly mounted within the casing and having a strop encircling the same with the ends of the strop extending exteriorly of the casing and provided with handles, one of which is removable therefrom to permit of removing the strop from the casing for the purpose of presenting the reverse side thereof and a blade holder having con nection with the said roller and operable when the said roller is operated to move the blade, retained in the blade holder, alternately into engagement with one portion of the strop and then with the other portion of the strop.

Reference is to be had to the accompanying drawings constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which- Figure 1 is a perspective view of my stropping machine, an ordinary razor being shown in dotted lines, in stropping posi tion. Fig. 2 is a fragmentary vertical sectional view looking at the interior of the strop from the rear thereof. Fig. 3 is a fragmentary vertical sectional view taken through the center of the stroppin g machine.

Specification of Letters Patent.

Application filed November 22, 1911, Serial No. 661,830. Renewed August 12, 1913.

Patented Mar. 24, 1914i.

Serial No. 784 38.

Fig. 4 is a vertical transverse sectional view. taken substantially on the line 4L- 1 in Fig; 3, Fig. 5 is a vertical transverse sectional view taken on the line 5-5 in Fig. 3. Fig. 6 s a vertical transverse sectional view showmg the blade in one of its stropping posit1ons, the dotted lines denoting the other stroppmgposition of the blade. Fig. 7 is a perspective view of the blade holder. Fig. 8 is a fragmentary vertical sectional view of the removable handle of the strop.

Referring to the views and more particu larly to Fig. 1 I provide a rectangular casing 10 having a side 11 thereof partially open to permit of inserting a razor blade in the casing and mounted to swing on the up per end of the casing is a staple 12 adapted for connection with a stationary hook or the like Horizontally mounted in the casing 10 1s a bearing shaft 13 having disks 1 1 loosely mounted thereon and mounted to encircle the disks and rotatable within the cas1ng 10 is a roller 15. An axle 16 is secured 1n the casing 10, beneath the roller and jonrnaled thereon is a blade holder 17, consisting of a body portion 19 having integral depending converging flexible plates 20, integral actuating lugs 21 being formed on the body 19 and extending upwardly therefrom to project through openings 22 in the roller 15, the axle 16 being preferably extended through the lower portions of the lugs 21 although the said axle can also be conveniently passed through the body 19. A spring 23 has an end thereof passed through an aperture in the body 19, the said end being swayed or otherwise rigidly secured to the body with the main portion of the spring projecting downwardly between the plates 20, the free end of the said spring being bent to abut against the under side of the body 19 as shown in Fig. 3, it being understood that the spring 23 is normally in its lowermost position as shown in Fig. 4. Rigidly secured at the lower portion of the end of the casing 10 is a spring bar 2% having a laterally bent end 25, projecting into an end of the blade holder 17 between the plates thereof, the said spring bar having its lower end rigidly secured to the easing 10 to normally retain the blade holder in a centrally depending position within the casing 10. V

A strop 26 is provided, consisting of a portion 27 having a smooth side and a porcured to one end of the strop 26 is a plate 29 having a handle 30 mounted thereon and when it is desired to mount the strop within the casing 10, the free end of the strop is passed upwardly in the casing, between a side of the casing and a guide 31, as shown in Figs. 4;, 5 and 6, the mentioned strop being then passed around the roller 15 and then extended downwardly to pass outwardly through the lower end of the casing, between the other side of the casing and a guide 32, the mentioned guides 31 and 32 being provided to extend horizontally in the casing and aid in retaining the strop against the inner sides of the casing.

The free end of the strop 26 is provided with openings 33 through which are passed apertured spring-like hook members 34 formed integrally on a plate 35, having a handle 36 mounted to swing thereon. EX- tending outwardly from the plate 35 are apertured locking lugs 37 adapted to extend through the apertures in the hook members 34, a locking bar 38 being then passed through the apertures of the locking lugs 37 to retain the hook members 33 in locked engagement therewith, thus securing the plate 35, provided with the handle 36 to the free end of the strop 26.

In the use of my device a razor blade 39 is moved into the blade holder 17, between the plates 20 thereof and the spring 23, bearing against the flattened end of the razor blade will press the same outwardly so that.

the cutting edge of the blade will extend exteriorly of the blade holder and the mentioned spring will aid in retaining the body of the blade in rigid position within the blade holder. By grasping the handles 30 and 36 and pulling downwardly on the handle 30, the roller 15 will be rotated and the blade holder 17 being pivotally mounted in the casing 10 with the lugs 21 engaging the roller, the lower end of the mentioned blade holder will be swung toward one side so that the blade 39 will engage the side of the strop that is moving downwardly and outwardly from the casing 10 as shown in Fig. 6. \Vhen the end of the stroke of the strop is reached, a pull is exerted on the handle 36, thus reversing the motion of the strop and also reversing the rotation of the roller 15, thus in turn swinging the blade holder and blade 39 toward the other side of the casing to engage the downwardly moving portion of the strop. Therefore, the reciprocating movement of the strop will cause the blade holder 17 to oscillate within the casing so that the blade 39 will first engage one portion of the inner side of the strop and then another portion of the inner side of the strop. When the blade 39 has been stropped on the rough side of the strop 26, and it is desired to engage the blade with the smooth side of the strop, the locking bar 38 is removed from'the looking lugs 37 the hook members 33 are disengaged from the locking lugs 37 and then by slightly bending the hook members, the same can be disengaged from the strop 26, thus permitting the operator to remove the strop from the casing 10 by pulling on the handle 30, after which the strop is reversed and repositioned in the casing, the plate 35 being reengaged with the strop in the manner mentioned heretofore. The action of the spring bar 2 1, normally retains the blade holder 17 in vertically central position within the casing 10 when the stropping machine is not in use, thus enabling the operator to more easily insert the blade within the blade holder and obviating the danger of cut-ting or otherwise injuring the strop 26.

I claim A stropping machine comprising a casing presenting a pair of parallel side walls, guides upon the casing in spaced relation to said walls, superposed shafts within the casing above said guides, a guide roller upon the upper shaft comprising a cylinder having openings at the ends thereof, a blade holder pivotally mounted upon the lower shaft and comprising a body portion having upstanding lugs at the ends thereof forming cranks engaging said openings in the guide roller, whereby in the reverse oscillations of the latter, the holder will be oscillated in opposite directions, downwardly converging spring blade clamping members carried by the holder, a bowed spring carried by the holder and disposed between the upper ends of said clamping members to engage the back of an inserted blade a verti-' IRA IV. IRVING. Witnesses F. A; REISING, M. E. IRVING.

Copies of this patent may be obtained for five cents each, by addressing; the Commissioner of Patents.

Washington, D. G. 

